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One Variable Data Table in Excel. Scenario Manager in Excel. Goal Seek in Excel. Excel Solver.
Two-variable data table is best suited in situations when you want to see how the final result changes when two of the input variables change simultaneously (as against One Variable Data Table where only one of the input variable changes). If you want to analyze data when more than 2 variables change, scenario manager is the way to go.
When to use Two Variable Data Table in Excel
Suppose you have a data set as shown below: In the above data set, we have the Loan Amount, Interest Rate, and Number of Monthly payments. Based on these 3 input variables, Monthly Payment is calculated (it is in red as it is an outflow of money). The following formula is used to calculate the Monthly Payment: Now you may want to do an analysis to see what should be the ideal combination of Loan Amount and Number of Monthly Payment to suit your requirement. For example, you may want to keep the Monthly Payment at $500 or less, and analyze what Loan Amount and Tenure combination can give you this. In such a situation, a two variable data table should be used.
Setting up Two Variable Data Table in Excel
Here are the steps to set up a Two variable data table in Excel:
In a column, have all the different values that you want to test for Number of Monthly Payments. In this example, we are testing for 72, 84, 96… 240. At the same time, have the different loan amount values in the row just above the column values (beginning one cell to the right) as shown in the pic below. Type =B4 in cell D1, which is one row above the values in the column. This is a construct that needs to be followed when you work with two variable data table. Also, make sure that the value in cell D1 is dependent on both the variables (Number of Monthly Payments and Loan amount). It won’t work if you manually enter the value in cell D1. In this case, cell D1 refers to cell B4, which has a value calculated using a formula which uses cells B1, B2 and B3. Now the data is all set to be used for a two variable data table calculation. Select the data (D1:J16). Go to Data Tab –> Data Tools –> What if Analysis –> Data Table In the Data Table Dialogue box, use the following references: Row input cell: $B$1 Column input cell: $B$3 Click OK. As soon as you click OK, it instantly fills the all the empty cells in the selected data range. It quickly gives you a view of Monthly Payments for a various combinations of Loan amount and Number of Monthly Payments.
For example, if you want to identify the combinations of Loan Amount and Number of Monthly Payment that would result in a Monthly Payment of less than $500 per month payout, you can simply use this 2 variable data table method.
Once you have calculated the values using data table, it can not be undone using Control + Z. You can however manually select all the values and delete it. You can not delete/modify any one cell in the entire set of calculated values. Since this is an array, you will have to delete all the values.
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